Abstract: A shape data creating apparatus for creating shape data by utilizing a database has an operation measures database. The operation measures database stores attributes of working accuracy, reliability and working cost in a unit of operation of working or assembling. A shape operation measures selecting unit selects a measure used for practical work from a plurality of measure possibly used for working and assembling. A totaling unit calculates workability, assembling efficiency and cost of a shape when working measure and assembling measure selected by consulting attributes stored in the operation measures database are used. A process database stores operation processes of working and assembling. Addition, deletion and order change in an operation process are processed by a shape operation process editing unit.

Abstract: A head element is made into contact with the surface of a recording medium so as to realize a float-up degree of 5 nm. Accordingly, a slider incorporating the head element for recording and reproducing data to and from the recording medium is provided thereon with a plurality of pads having step parts, and one of the plurality of pads, on which the head element is mounted, has a height which is less than that of the other pads. Thus, the pads other than the pad on which the head element is mounted are floated up while the pad on which the head element is mounted is stably made into contact with the surface of the recoding medium by means of a meniscus suction force and a damping action of lubricant applied on the surface of the recording medium.

Abstract: A magnetic head slider includes a magnetic head for recording/reproducing information from/into a magnetic disk and a slider on which the magnetic head is mounted. The slider has a first surface provided at an air-inflow side and a second surface provided at an air-outflow side. Projections are provided at the air-inflow side with respect to the first surface on a surface while faces the magnetic disk upon read/write operation of the magnetic head slider.

Abstract: The present invention provides an analytical model preparing apparatus which reduces the user's labor of template selecting operation by selecting and presenting an appropriate template from among a plurality of already prepared templates.

Abstract: A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of.the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.

Abstract: A magnetic disc apparatus includes a magnetic disc, a slider incorporating lifting rails or lifting pads, a magnetic head provided to a lifting rail or a lifting pad on the outflow end side, a suspension supporting the slider, and a carriage attached to the suspension. The slider has an inverted stepped wall formed in a shape such that it is caved in a direction from the inflow end to the outflow end of the slider, and a bleed surface formed at the outflow end side of the inverted stepped wall and caved from the lifting rails or the lifting pads. An action point of an equivalent load is located offset from the inverted stepped wall of the slider toward the inflow end of the slider.

Abstract: A magnetic disk unit includes a magnetic disk, a slider having a magnetic head, a suspension for providing the slider, and an actuator arm for positioning the slider on the magnetic disk a first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of the slider. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider. When the slider is seek-positioned on a certain track on the magnetic disk, a frictional force exerted between the first pad of the slider and the magnetic disk is smaller than a product of lateral stiffness of the suspension in a seeking direction and a track width.

Abstract: A decrease in the lift-up degree of the outflow end of a slider at an altitude of 3,000 m is set to be less than 2 nm or to be zero in order to set the lift-up degree of the outflow end to be less than 10 nm. There is provided a magnetic disc apparatus in which the action point of positive pressure is shifted toward the inflow end but the action point of negative pressure is shifted toward the outflow end so as to enhance the influence upon the outflow end by the negative pressure in order to effect an action in the increasing direction of the lift-up degree of the outflow end when the pressure is reduced. Further, it is possible to increase the lift-up degree of the outflow end when the pressure is decreased. The action point of the equivalent load is offset from the action point of positive pressure toward the inflow end, and the distance between the action point of the positive pressure and the action point of the equivalent load point is set to be greater than 0.

Abstract: A magnetic head slider having a magnetic head for reading/writing information from/into a magnetic disk and a slider on which the magnetic head is mounted. The slider has three surface portions with levels which are different from each other on a surface facing to the magnetic disk including a first surface portion forming a pad surface, a second surface portion having a level which is lower than a level of the first surface portion and a third surface portion having a level which is lower than that of the second surface portion. The second surface portion is provided at a side opposite to a side on which the magnetic head is mounted and the third surface portion is provided at the side on which the magnetic head is mounted. A projection is provided on the second surface portion.

Abstract: A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.

Abstract: A magnetic head slider having a magnetic head for reading/writing information from/into a magnetic disk and a slider on which the magnetic head is mounted. The slider has three surface portions with levels which are different from each other on a surface facing to the magnetic disk including a first surface portion forming a pad surface, a second surface portion having a level which is lower than a level of the first surface portion and a third surface portion having a level which is lower than that of the second surface portion. The second surface portion is provided at a side opposite to a side on which the magnetic head is mounted and the third surface portion is provided at the side on which the magnetic head is mounted. A projection is provided on the second surface portion.

Abstract: When a negative pressure slider is used in the magnetic head support mechanism with a loading/unloading function, the gimbals is likely to be deformed or damaged. Apart from the first tab provided to the front end of the suspension, the second tab is provided to the front end of the gimbals. In addition to the Suspension supporting ramp, the ramp portion has the second ramp for supporting the gimbals. This arrangement allows the slider mounting gimbals, in addition to the suspension, to be loaded/unloaded. Unlike the conventional drive in which only the suspension is loaded/unloaded, this arrangement enables the gimbals to be loaded/unloaded while maintaining a predetermined space between the gimbals and the suspension, thus reducing the risk of gimbals deformation and damage.

Abstract: A magnetic disk device and a flying slider, having a magnetic head for reading and writing information, are disclosed. The magnetic head slider includes flying pads of a stepped configuration for flying the slider, and each of the flying pads has a flat surface portion and a step surface recessed from this flat surface portion through a microscopic step. Microscopic projections are formed on the step surface. The height of the microscopic projections are higher than or substantially equal to the height of the step. With this construction, the slider is less liable to be turned to lean forward because of the provision of the microscopic projections, and beside a front edge of the step surface will not damage a magnetic disk surface. A variation of the flying height can be reduced by a negative pressure produced at the rear side of each microscopic projection. Therefore, there can be provided the magnetic disk device having high reliability and a large capacity.

Abstract: A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.

Abstract: A magnetic disk device having a head IC on a magnetic head supporting mechanism. In order to secure the reliability by controlling the IC temperature below a predetermined level, the difference in the IC cooling ability varying with the radial position on the disk is quantified, so that power (signal) sufficient to maintain a constant temperature according to the IC temperature is supplied to the IC. Since the cooling ability at a given radial position of the IC is not exceeded by the power consumption, the IC temperature can be maintained below a predetermined level.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.

Abstract: A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of. the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.

Abstract: A head element is made into contact with the surface of a recording medium so as to realize a float-up degree of 5 nm. Accordingly, a slider incorporating the head element for recording and reproducing data to and from the recording medium is provided thereon with a plurality of pads having step parts, and one of the plurality of pads, on which the head element is mounted, has a height which is less than that of the other pads. Thus, the pads other than the pad on which the head element is mounted are floated up while the pad on which the head element is mounted is stably made into contact with the surface of the recoding medium by means of a meniscus suction force and a damping action of lubricant applied on the surface of the recording medium.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.